h264bsdFillRow7.s revision 0c1bc742181ded4930842b46e9507372f0b1b963 
1;
2; Copyright (C) 2009 The Android Open Source Project
3;
4; Licensed under the Apache License, Version 2.0 (the "License");
5; you may not use this file except in compliance with the License.
6; You may obtain a copy of the License at
7;
8;      http://www.apache.org/licenses/LICENSE-2.0
9;
10; Unless required by applicable law or agreed to in writing, software
11; distributed under the License is distributed on an "AS IS" BASIS,
12; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13; See the License for the specific language governing permissions and
14; limitations under the License.
15;
16
17    REQUIRE8
18    PRESERVE8
19
20    AREA    |.text|, CODE
21
22    EXPORT h264bsdFillRow7
23
24; Input / output registers
25
26ref     RN 0
27fill    RN 1
28left    RN 2
29tmp2    RN 2
30center  RN 3
31right   RN 4
32tmp1    RN 5
33
34; -- NEON registers --
35
36qTmp0   QN  Q0.U8
37qTmp1   QN  Q1.U8
38dTmp0   DN  D0.U8
39dTmp1   DN  D1.U8
40dTmp2   DN  D2.U8
41dTmp3   DN  D3.U8
42
43
44;/*------------------------------------------------------------------------------
45;
46;    Function: h264bsdFillRow7
47;
48;        Functional description:
49;
50;        Inputs:
51;
52;        Outputs:
53;
54;        Returns:
55;
56;------------------------------------------------------------------------------*/
57
58h264bsdFillRow7
59        PUSH     {r4-r6,lr}
60        CMP      left, #0
61        LDR      right, [sp,#0x10]
62        BEQ      switch_center
63        LDRB     tmp1, [ref,#0]
64
65loop_left
66        SUBS     left, left, #1
67        STRB     tmp1, [fill], #1
68        BNE      loop_left
69
70switch_center
71        ASR      tmp2,center,#2
72        CMP      tmp2,#9
73        ADDCC    pc,pc,tmp2,LSL #2
74        B        loop_center
75        B        loop_center
76        B        case_1
77        B        case_2
78        B        case_3
79        B        case_4
80        B        case_5
81        B        case_6
82        B        case_7
83        B        case_8
84;case_8
85;        LDR      tmp2, [ref], #4
86;        SUB      center, center, #4
87;        STR      tmp2, [fill], #4
88;case_7
89;        LDR      tmp2, [ref], #4
90;        SUB      center, center, #4
91;        STR      tmp2, [fill], #4
92;case_6
93;        LDR      tmp2, [ref], #4
94;        SUB      center, center, #4
95;        STR      tmp2, [fill],#4
96;case_5
97;        LDR      tmp2, [ref], #4
98;        SUB      center, center, #4
99;        STR      tmp2, [fill],#4
100;case_4
101;        LDR      tmp2, [ref],#4
102;        SUB      center, center, #4
103;        STR      tmp2, [fill], #4
104;case_3
105;        LDR      tmp2, [ref],#4
106;        SUB      center, center, #4
107;        STR      tmp2, [fill], #4
108;case_2
109;        LDR      tmp2, [ref],#4
110;        SUB      center, center, #4
111;        STR      tmp2, [fill], #4
112;case_1
113;        LDR      tmp2, [ref],#4
114;        SUB      center, center, #4
115;        STR      tmp2, [fill], #4
116
117case_8
118        VLD1    {qTmp0, qTmp1}, [ref]!
119        SUB     center, center, #32
120        VST1    qTmp0, [fill]!
121        VST1    qTmp1, [fill]!
122        B       loop_center
123case_7
124        VLD1    {dTmp0,dTmp1,dTmp2}, [ref]!
125        SUB     center, center, #28
126        LDR     tmp2, [ref], #4
127        VST1    {dTmp0,dTmp1,dTmp2}, [fill]!
128        STR     tmp2, [fill],#4
129        B       loop_center
130case_6
131        VLD1    {dTmp0,dTmp1,dTmp2}, [ref]!
132        SUB     center, center, #24
133        VST1    {dTmp0,dTmp1,dTmp2}, [fill]!
134        B       loop_center
135case_5
136        VLD1    qTmp0, [ref]!
137        SUB     center, center, #20
138        LDR     tmp2, [ref], #4
139        VST1    qTmp0, [fill]!
140        STR     tmp2, [fill],#4
141        B       loop_center
142case_4
143        VLD1    qTmp0, [ref]!
144        SUB     center, center, #16
145        VST1    qTmp0, [fill]!
146        B       loop_center
147case_3
148        VLD1    dTmp0, [ref]!
149        SUB     center, center, #12
150        LDR     tmp2, [ref], #4
151        VST1    dTmp0, [fill]!
152        STR     tmp2, [fill],#4
153        B       loop_center
154case_2
155        LDR      tmp2, [ref],#4
156        SUB      center, center, #4
157        STR      tmp2, [fill], #4
158case_1
159        LDR      tmp2, [ref],#4
160        SUB      center, center, #4
161        STR      tmp2, [fill], #4
162
163loop_center
164        CMP      center, #0
165        LDRBNE   tmp2, [ref], #1
166        SUBNE    center, center, #1
167        STRBNE   tmp2, [fill], #1
168        BNE      loop_center
169        CMP      right,#0
170        POPEQ    {r4-r6,pc}
171        LDRB     tmp2, [ref,#-1]
172
173loop_right
174        STRB     tmp2, [fill], #1
175        SUBS     right, right, #1
176        BNE      loop_right
177
178        POP      {r4-r6,pc}
179        END
180
181